Improvement in machines for shaping the springs of light carriages



L. H. RICHARDSON. Improvement in Machines fpr Shaping the Springs ofLight Carriages. No. 128,173. Patentedlune18,1872.

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IMPROVEMENT IN MACHINES FOR SHAPING THE SPRINGS OF LIGHT CARRIAGES.

Specification forming part of Letters Patent No. 128,173, dated June 18,1872.

To allperso'ns to whom these presents may come:

Be it known that I, LORENZO H. RICHARD- SON, of Westfield, of the countyof Hampden, of the'State of Massachusetts, have invented a new anduseful Machine for Shaping Springs used in the Construction of LightCarriages,

particularlysuch as are termed childrens carriages, and I do herebydeclare the same to be fully described in the following specificationand represented in the accompanying drawing, of which Figure 1 is afront view, and Fig. 2 a rear elevation, and Fig. 3 an edge view of suchmachine.

It consists of shaping-dies, rollers, and their operative mechanism, allarranged and constructed and applied to a plate substantially ashereinafter explained and as shown.

In the drawing, A denotes a curved bed or stationary die, fixed to andprojected from a metallic plate, B, having two curved slots, 0 0,arranged in and through it, in manner and with respect to the said bedas represented. Directly over the bed is the spring-shaping follower ormovable die D, having a form as shown, such die being provided with aprojection, a, for a cam-lever, E, arranged, as shown, to operateagainst. The said cam-lever is supported on a fulcrum or pivot, 1),extended from the plate B and through a slot, 0, made transverselythrough the follower-die D. The projection a of the die D is connectedwith the shorter arm of the cam-lever by a nexus, E,

pivoted to both. F F are two rollers, fixed on arbors G G extendedthrough the two slots 0 0, there being gears H H fixed on such arbors.Each of these gears is provided with a pulley, I, projected from itsinner side concentrically,

all being as shown in Fig. 4, which is a top view of one of the arborsG, its roller F, gear H, and pulley I. Stationary gears K K, fixed tothe back of the plate B, and arrangedas shown-viz., concentrically, orabout so, with the curved slots 0 O-engage with the gears H H.Furthermore, two chains, L L, fastened to the peripheries of the pulleysI I, and extended partially around such, extend to and are fastened tothe peripheries of a rotary segment, M, arranged to turn on a pivot, N,and provided with a lever or arm, 0, all being as shown. Guides P I,extended from the plate B and projecting across the chains, serve tokeep them from slipping oil the periphery of the segment while thelatter may be in operation.

By laying hold of the cam-lever E and moving it in the right direction,the follower-die will be forced down toward the beddie, a contrarymotion of the lever serving to raise the follower-die up to a positionfor a straight strip of steel, when heated to redness, to be introducedbetween the dies and upon the two rollers, when the latter are at theirlowest positions. After the said strip may have been so placed betweenthe dies the cam-brace is to be operated so as to force the follower-diedownward into the bed-die and against the two rollers. This operationwill cause the spring or strip of steel to be partially bent around thefollower. The remainder of the bending of the strip is to be performedby the rollers, which will be caused to move upward, around the ends,and over the upper edge of the follower-die by a person taking hold ofand moving the arm or lever of the segment.

The spring, when completed, has the form as shown in edge view in Fig.5.

I claim- The machine, constructed substantially as and for use asspecified-that is, as composed of the bed-die A, follower D, cam-leverE, plate B, curved slots 0 O, rollers F F, arbors Gr, pulleys I I, gearsH K, chains L L, and movable segment M pivoted With the lever or arm Oall arranged and applied together in manner and to' operate essentiallyas described and represented, and forthe purpose as explained. LORENZOH. RICHARDSON.

Witnesses:

R. H. EDDY, J. R. Snow.

